Yes, I thought about that this morning. I was going to try that tomorrow if the geniuses here didn't have any ideas on a solution.
Megarevo RxLNA Discussion
- Thread starter jsmetalcraft
- Start date
fromport
Solar Addict
Like I predicted, because of rain yesterday my battery only got recharged to 45%, in the evening it got down to 20% and the grid took over
The grid did not charge my batteries back up
I did get a warning:
Totally different behavior from your setup
fromport
Solar Addict
I wrote down all my menu settings.
Can you compare those with yours and tell what the differences are?
All are the same except I am charging the battery at 50A and grid % is 100
fromport
Solar Addict
I have 4x 120Ah 15s batteries in parallel. my setup can take those amps.
Can you change that grid 100% to my setting and see what it does?
I think that might be it.
Sad news, it didn’t work. It charged and stayed at 100% throughout the night. When PV came on, it discharged and stayed discharged at 20% SOC even an hour after PV was gone. The only way it to start charging again was to change the battery to lead-acid, re-enter the battery settings then change back to Lithium. After a brief Dc-dc standby and some thing PFC on the status screen it went back to charging again
fromport
Solar Addict
That is so totally different from my setup.
Because of heavy rain yesterday, my battery hit 20% just after 7PM and the house ran from the grid till next morning.
PV picked up, started providing the loads, then started charging my batteries again. When full, started exporting to the grid
Is that the kind of behavior you want to have as well?
I am confused why during the day your battery starts discharging.
How much PV do you have hooked up again?
7.75kwh but it’s been rainy here in Wisconsin.
I’ve exported a lot to the net metering over the summer but it’s only been a week or so since the batteries have been 100% online with critical loads panel. Normally the PV will cover the loads and give back 5-20kwh to the grid per day but that was summer and early fall.
fromport
Solar Addict
This is my graph of yesterday when it was raining here:
At least whatever sun we had was able to take over the loads & do _some_ charging (up to 48% or so) and then the load took the batteries down to 20% again.
As soon as your MR sees solar it starts to generate power from the batteries and put it in the grid.
Only thing I can think of right now is your CT setup that is different from me.
For anyone interested in communicating with Modbus to the inverter. Here is a list of addresses, I have been using pysolarmanv5.
docs.google.com
REVO series Hybrid Inverter_Modbus Protocol(V2.0) (1).xlsx
instructions PCS与后台监控Modbus通讯点表 Hybrid Inverter_Modbus Protocal 规则说明： protocol specification： 1、地址默认为1 1、Adder 1 2、标准Modbus协议 2、Standard Modbus Protocol 3、波特率9600，格式 8bit 数据位,无校验位， 1bit停止位 3、9600，8bit, No parity bit, 1bit Stopbit 4、单相机机型电网、负载数据采用B相 北美裂相机机型电网、负载数据为L1即A相、L2即B相 4、single equipment ...
fromport
Solar Addict
I asked MR about new firmware and this was their response:
NCSolarGarage
13.2kW Off-Grid
- Joined
- Sep 23, 2021
- Messages
- 213
That will be good to have. I am currently on 1.3.11 and 2.4.11.
One thing that is strange. I have 2 inverters, both purchased at the same time, both on the same firmware. One of them reports much more data to Solarman (including the battery energy data @Slvrsky07 ) I can't determine why the data is different.
For example...
VS:
One thing that is strange. I have 2 inverters, both purchased at the same time, both on the same firmware. One of them reports much more data to Solarman (including the battery energy data @Slvrsky07 ) I can't determine why the data is different.
For example...
VS:
NCSolarGarage
13.2kW Off-Grid
- Joined
- Sep 23, 2021
- Messages
- 213
Yes, the strange thing is the "master" is the one with less data. The slave has more data, but you'll notice a lot less energy since it is currently in standby and the master has the PV and does the bulk of the work.
I asked GSL for firmware info, but I haven't heard back.
I asked GSL for firmware info, but I haven't heard back.
NCSolarGarage
13.2kW Off-Grid
- Joined
- Sep 23, 2021
- Messages
- 213
I tried that when I first got mine. The problem is that when it tried to reboot, it shut down the loads (wifi, etc) since I'm offgrid and it failed to update. This left me with an inverter that refused to boot. Luckily the firmware was posted in this thread and I was able to flash from my laptop.
Yes, that’s kinda my fear. All my internet stuff is all connected to the critical loads side so once it goes dark it’s done. I’m trying to get them to send me the file to update. Hopefully the updates fix some of the little bugs and maybe hopefully it will let me poll some of the modbus addresses I’m having issues with.
Has anyone been working with this? I am still having a hard time reading the inverter status such as charging/ discharging 0x3104 through the modbus protocol.For anyone interested in communicating with Modbus to the inverter. Here is a list of addresses, I have been using pysolarmanv5.
REVO series Hybrid Inverter_Modbus Protocol(V2.0) (1).xlsx
instructions PCS与后台监控Modbus通讯点表 Hybrid Inverter_Modbus Protocal 规则说明： protocol specification： 1、地址默认为1 1、Adder 1 2、标准Modbus协议 2、Standard Modbus Protocol 3、波特率9600，格式 8bit 数据位,无校验位， 1bit停止位 3、9600，8bit, No parity bit, 1bit Stopbit 4、单相机机型电网、负载数据采用B相 北美裂相机机型电网、负载数据为L1即A相、L2即B相 4、single equipment ...
Cheap 4-life
My body is 2.63 trillion volts, .07v per cell
So with it set up the way you describe. How does the inverter cover the water heater load if the inverter only supplies power out to the EPS panel?
It sounds like the inverter does not output to them since they are in the main panel and not the EPS or critical loads panel.
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